run S26KL512SDABHI020 @ 3.3V with 100MHz

[InWe_4824551]

Hello,

we want to supply the S26KL512SDABHI020 with 3.3V and operate it with 100MHz. The length matching of the lines fit to the guidline. We have only 50% running at 100MHz with 10 prototypes. They are also not temperature stable. The bus signals look good from a measurement standpoint.
1) Are the 100MHz at 3.3V already at the limit of the specification?
2) What does the code DA=100MHz in the order number mean?
3) Are there any special features to be considered?

Thanks and Best Regards,

Ingolf

[BushraH_91]

Hello Ingolf,

Thank you for contacting Cypress Technical Support, an Infineon Technologies Company. We are currently reviewing the case and will get back to you as soon as we find the resolution.

Regards,

Bushra

[BushraH_91 · Accepted solution]

Hello Ingolf,

Please see below

1) Yes, 100MHz is maximum SCK speed for S26KL-S, 3.3V devices

2) That means maximum SCK speed. For 3.3V devices, only DA=100MHz is available.

3) Changing output drive strength may improve signal integrity. It can be done via configuration register. Please see section 6.2.12 in the datasheet.

Thank you

Regards,

Bushra